--%>

Vaccines against the viral infection-dengue and AIDS

Why is it difficult to create effectual vaccines against the viral infection such as dengue and AIDS?

E

Expert

Verified

It is difficult to create vaccines against the dengue since there are four dissimilar types of viruses which cause the disease (DEN1, DEN3, DEN2 and DEN4) and it is supposed that the protection against one of them make worse the clinical manifestation when the person is later infected by another dengue virus.

In the case of HIV, the production of a vaccine is hard since the virus is extremely mutants and evades antibody action.

   Related Questions in Biology

  • Q : Concentration of auxin in the plant

    What will happens when the concentration of the auxin in some of the structures of the plant is over the action range of hormone?

  • Q : Main function of secretin in the

    Where secretin is produced and what is the main function of secretin in the digestive process? Answer: Secretin is made up in the duodenum. The chyme acidity causes

  • Q : Explain Milk Tolerance In Humans Milk

    Milk Tolerance In Humans: Most of the adults find it difficult to digest, Lactose the sugar in milk. This is because the gene, that code for the enzyme Lactase, is switched off. Lactase breaks lactose into of glucose and galactose. Glucose and galacto

  • Q : Control Risk Response Control Risk

    Control Risk Response:A) Monitor and control risk responses, as well as tracking project progress. B) Not every detail of a project will materialise as expected – change control management is therefore

  • Q : Neural transmission within the spinal

    How poliomyelitises affect the neural transmission within the spinal cord?

  • Q : Explain the term vitamins Explain the

    Explain the term vitamins? What are the major vitamins required by humans?

  • Q : Differentiate between the exocrine

    Differentiate between the exocrine gland and the endocrine gland?

  • Q : Effect of price supports or acreage

    Assume the government wants to raise farmers' incomes. Why do price supports or acreage restriction programs cost society more than simply giving farmer's money?Price supports & acreage limitations cost society more than the dollar cost of

  • Q : Nitrogen waste produced by bird State

    State the type of nitrogen waste produced by the bird? Why are these traits, besides being an adaptation for the terrestrial environment, also facilitate as an adaptation for the flight?

  • Q : Introduction of the term ascaris Give

    Give brief introduction of the term ascaris? What is the disease caused by this worm?